Feinstruktur der Röntgenabsorption
1.XAFS ist ein leistungsstarkes Werkzeug zur Untersuchung der lokalen atomaren oder elektronischen Struktur von Materialien.
2.XAFS-Anwendungsfelder: industrielle Katalyse, Nanomaterialien, auch Qualitätsanalyse, Analyse schwerer Elemente usw
3.XAFS-Produktvorteil: Ultrahohe Auflösung (so niedrig wie 0,5 eV), Fluoreszenzmuster (geringer Gehalt an der Basis mit hoher Rückseite), ultrahoher Lichtstrom, extrem niedrige Nachweisgrenzen (so niedrig wie 0,3–0,5 %, 10,1039/ D2CC05081A)
- Tongda
- Liaoning, China
- 1–2 Monate
- 100 Nuits pro Jahr
- Information
X-ray Absorption Fine Structure (XAFS), also called X-ray Absorption Spectro scopy (XAS), It is a powerful tool for studying the local atomic or electronic struct ure of materials based on synchrotron radiation light source, and is widely used in hot fields such as catalysis, energy and nano.
Technical parameter | ||
Comprehensive performance | Parameter | Instructions |
Energy range | 5-19keV | |
Spectral mode | Transmission mode | |
Luminous flux at sample | ||
Energy resolution | XANES:0.5-1.5eV EXAFS:1.5-10eV | |
X-ray pathway | Helium access reduces air absorption | |
Repeatability | Repeated acquisition energy drift <50meV | |
X-ray source | Power | 1.6kW, high voltage 10-40kV, current 1-40mA |
Target material | W\Mo target, other targets can be selected | |
Monochromator | Type | 500mm radius of curvature spherical analytical crystal, size 100mm |
Detector | Type | Large area SDD, 150mm2 effective area |
Other configuration | Sample wheel | 18-bit sample wheel, multi-sample continuous automated testing |
In situ sample pool | Electrocatalysis, variable temperature, other multi-field, mechanical conditions in situ cell | |
Analytical crystal | Custom analysis crystal monochromator for special elements | |
Core advantage:
1.Highest luminous flux products
The photon flux is higher than 1,000,000 photons/SEC /eV, and the spectral acquisition efficiency is several times that of other products; Get the same data quality as synchrotron radiation.
2.Excellent stability
The monochromatic light intensity stability of the light source is better than 0.1%, and the repeated acquisition energy drift is < 50 meV.
3.1% detection limit
High luminous flux, excellent optical path optimization, and excellent light source stability ensure high-quality EXAFS data with measured element content
Principle of instrument
X-ray absorption fine structure (XAFS) is a powerful tool to study the local atomic or electronic structure of materials, which is widely used in catalysis, energy, nano and other hot fields.
The laboratory monochromator XES tests geometric structures
Mn data, Mn K-edge XAFS data, data consistent with synchrotron radiation source
Emission spectrum data of Fe sample Kβ : core to core XES and valence to core XES
Test data
Foil EXAFS data
Measurable elements: the green part can measure the K side, the yellow part can measure the L side
Application fields: industrial catalysis, energy storage materials, nanomaterials, environmental toxicology, also quality analysis, heavy element analysis, etc
